Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 20mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ20 mm
- Stroke20 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SCM
Round tail, round barrel, one compact body: the CM back cover gives MAC20X20SCM a fully rounded end that suits clevis-style and floating mounts on tight machines. It is double acting - air drives the 8 mm rod out and back - with a variable air cushion at each end, pushing 157 N and pulling 132 N at 0.5 MPa. At 0.7 MPa that becomes 220 N, and the theoretical ceiling is 32 kgf.
The riveted stainless barrel shrugs off splash and humidity where painted aluminium bodies pit, which is why food and packaging builders like this family. Plan on about 94 N of usable push at 0.5 MPa, or roughly 8 kg of vertical lift with margin. The standard magnet feeds CMSG, DMSG or EMSG switches without ordering extras.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SCM Is Used
Jar capping head
Lowering a light capping head onto jam jars - 157 N at 0.5 MPa seats the lid and the stainless body tolerates sticky splash-down.
Hopper slide gate
Opening a powder slide on a small dosing hopper where the round-end cover pairs with a clevis and the cushion prevents gate slam.
Bench tester probe
Driving a contact probe in an electronics bench test, cycling between 30-800 mm/s with an EMSG switch reading each stroke.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SCM the Right Cylinder?
At 20 mm of stroke this cylinder is a short-move specialist; if you need reach, the same bore stretches to 500 mm as a standard order. Force-wise, 157 N at 0.5 MPa brackets the 16 mm bore (100.5 N) below and the 25 mm bore (245.3 N) above. Remember the piston is free to move when air drops - a rod lock or pilot check valve is the fix for held loads. Mount with FA flange, LB foot or SDB pivot; the 1/8" ports come in PT, G or NPT thread options.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X20SCM FAQ
It develops 157 N push and 132 N pull at 0.5 MPa, 220 N push and 185 N pull at 0.7 MPa, with a 32 kgf theoretical maximum at 1.0 MPa. Supply pressure spans 0.15-1.0 MPa (22-145 psi), proof is 1.5 MPa (215 psi), speed 30-800 mm/s. The bore is 20 mm, the rod 8 mm (thread M8x1.25), ports 1/8", and 500 mm is the longest standard stroke for this bore.
The rolled stainless tube plus the hard-chrome plated carbon-steel rod resist corrosion from washdown, condensation and mild chemicals - failure modes that flake paint and pit plain aluminium. The riveted covers keep the joint sealed and rattle-free for the life of the cylinder.
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